diff options
Diffstat (limited to 'lib/dihedral.c')
-rw-r--r-- | lib/dihedral.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/lib/dihedral.c b/lib/dihedral.c deleted file mode 100644 index 8158b43..0000000 --- a/lib/dihedral.c +++ /dev/null @@ -1,55 +0,0 @@ - -#include "dihedral.h" - -dihedral_t *dihedral_compose(q_t q, q_t g1i, const dihedral_t *g2) { - // we only need to consider the action of reflections - dihedral_t *g3 = (dihedral_t *)malloc(1 * sizeof(dihedral_t)); - - g3->r = !g2->r; - g3->i = (g1i + q - g2->i) % q; - - return g3; -} - -q_t dihedral_act(q_t q, q_t gi, bool r, q_t s) { - // we only need to consider the action of reflections - - if (r) { - return (gi + q - s) % q; - } else { - return (gi + s) % q; - } -} - -q_t dihedral_inverse_act(q_t q, const dihedral_t *g, q_t s) { - if (g->r) { - return (q - ((q + s - g->i) % q)) % q; - } else { - return (q + s - g->i) % q; - } -} - -q_t *dihedral_gen_transformations(q_t q) { - q_t *transformations = (q_t *)malloc(2 * q * q * sizeof(q_t)); - - for (q_t i = 0; i < q; i++) { - for (q_t j = 0; j < q; j++) { - transformations[q * i + j] = dihedral_act(q, i, false, j); - transformations[q * q + q * i + j] = dihedral_act(q, i, true, j); - } - } - - return transformations; -} - -R_t *dihedral_gen_involutions(q_t q) { - R_t *transformations = (R_t *)malloc(q * sizeof(R_t)); - - for (q_t i = 0; i < q; i++) { - transformations[i] = q + i; - } - - return transformations; -} - - |